EmulatorPkg/AutoScanPei/AutoScanPei.c

   1 /*++ @file
   2
   3 Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
   4 Portions copyright (c) 2011, Apple Inc. All rights reserved.
   5 SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include "PiPei.h"
  10 #include <Ppi/EmuThunk.h>
  11 #include <Ppi/MemoryDiscovered.h>
  12
  13 #include <Library/DebugLib.h>
  14 #include <Library/PeimEntryPoint.h>
  15 #include <Library/BaseLib.h>
  16 #include <Library/BaseMemoryLib.h>
  17 #include <Library/HobLib.h>
  18 #include <Library/PeiServicesLib.h>
  19 #include <Library/PeiServicesTablePointerLib.h>
  20
  21 EFI_STATUS
  22 EFIAPI
  23 PeimInitializeAutoScanPei (
  24   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  25   IN CONST EFI_PEI_SERVICES     **PeiServices
  26   )
  27
  28 /*++
  29
  30 Routine Description:
  31   Perform a call-back into the SEC simulator to get a memory value
  32
  33 Arguments:
  34   FfsHeader   - General purpose data available to every PEIM
  35   PeiServices - General purpose services available to every PEIM.
  36
  37 Returns:
  38   None
  39
  40 **/
  41 {
  42   EFI_STATUS                   Status;
  43   EFI_PEI_PPI_DESCRIPTOR       *PpiDescriptor;
  44   EMU_THUNK_PPI                *Thunk;
  45   UINT64                       MemorySize;
  46   EFI_PHYSICAL_ADDRESS         MemoryBase;
  47   UINTN                        Index;
  48   EFI_RESOURCE_ATTRIBUTE_TYPE  Attributes;
  49
  50   DEBUG ((DEBUG_ERROR, "Emu Autoscan PEIM Loaded\n"));
  51
  52   //
  53   // Get the PEI UNIX Autoscan PPI
  54   //
  55   Status = PeiServicesLocatePpi (
  56              &gEmuThunkPpiGuid,      // GUID
  57              0,                      // INSTANCE
  58              &PpiDescriptor,         // EFI_PEI_PPI_DESCRIPTOR
  59              (VOID **)&Thunk         // PPI
  60              );
  61   ASSERT_EFI_ERROR (Status);
  62
  63   Index = 0;
  64   do {
  65     Status = Thunk->MemoryAutoScan (Index, &MemoryBase, &MemorySize);
  66     if (!EFI_ERROR (Status)) {
  67       Attributes =
  68         (
  69          EFI_RESOURCE_ATTRIBUTE_PRESENT |
  70          EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
  71          EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
  72          EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
  73          EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
  74          EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
  75         );
  76
  77       if (Index == 0) {
  78         //
  79         // Register the memory with the PEI Core
  80         //
  81         Status = PeiServicesInstallPeiMemory (MemoryBase, MemorySize);
  82         ASSERT_EFI_ERROR (Status);
  83
  84         Attributes |= EFI_RESOURCE_ATTRIBUTE_TESTED;
  85       }
  86
  87       BuildResourceDescriptorHob (
  88         EFI_RESOURCE_SYSTEM_MEMORY,
  89         Attributes,
  90         MemoryBase,
  91         MemorySize
  92         );
  93     }
  94
  95     Index++;
  96   } while (!EFI_ERROR (Status));
  97
  98   //
  99   // Build the CPU hob with 57-bit addressing and 16-bits of IO space.
 100   //
 101   BuildCpuHob (57, 16);
 102
 103   return Status;
 104 }